Double hung window



4 Sheets-Sheet 1 Filed July 11, 1958 INVENTOR. FRANK E. ADAMS FIG?) ATTORNEYS Dec. 5, 1961 F. E. ADAMS 3,011,224

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Dec. 5, 1961 F. E. ADAMS 00mm nuns wmnow 4 Sheets-Sheet 3 Filed July 11, 1958 mE x MW 0t. K k \J 4 2 RM & 6 2 9 H H Q h glww ZZZ/mm f 0 MW 0 m ills w 1NVENTOR..-

FRANK E. ADAMS FIG. 12

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ATTORNEYS Dec. 5, 1961 F. E. ADAMS DOUBLE HUNG wmoow 4 Sheets-Sheet 4 Filed July 11, 1958 FRANK E. ADAMS we. l8

ATTORNEYS U ifiid States Patent Patented Dec. 5, 1961 dice ' r 3,011,224 DOUBLE HUNG WINDOW Frank E. Adams, Walton Road, Seabrook, N.H.

Filed July 11, 1958, Ser. No. 747,894 3 Claims. 01. 20-52.s

improved sash structure, such means being adapted to be mounted in an ordinary window framewith little or no modification of the frame itself.

Other advantageous featuresvof structure will be apparent from the following description of certain embodiments of the invention, and from the drawing, of which FIGURE 1 is a perspective view of a double hung window frame, with sashes therein embodying the invention; FIGURE 2 is an elevation of the same, the lower sash being shown as ready for removal from the frame;

FIGURE 3 is a section,- on a larger scale, on the line 3-3 of FIGURE 1;

FIGURE 4 is a fragmentary elevation of a window frame and modified sash, the facing piece ofthe frame being removed to show the counterbalancing means;

FIGURE 5 is afragmentary elevation of a lower cor-.

ner of the sash shown in FIGURE 4 and an adjacent portion of the window frame;

FIGURE 6 is a section on the line 66 of FIGURE 4;

FIGURE 7 is a perspective view of the improved sash shown in FIGURE .4, one part of which is shown detached; i

FIGURES is a fragmentary section, on a larger scale, on the line 8.- 8 of FIGURE 7;

, FIGURE 9 is a fragmentary section, on a vertical plane, of a sash and frame embodying another modified form ofthe invention;

FIGURE. 10 is a section on the line 10-10 of FIG- URE 9; i

FIGURE 11 is a fragmentary sectional view of a modified detachable sash part;

FIGURE 12 isia view similar to a portion of FIGURE 11, showing some of the moving members in a different position;

. FIGURES 13 and 14 are enlarged sections on the lines 13-13 and 1414 of FIGURE 11;

FIGURE 15 is a fragmentary elevation of another form of double-sash window and frame, portions being broken away to show in section;

FIGURE 16 is a section on the line 1616 of FIG- URE 15;

FIGURE 17 is a section on the line 17-17 of FIG- URE l5; and.

FIGURE 18 is a fragmentary exploded perspective view of the sash shown in FIGURE'IS. V i

The standard conventional window sash consists of one or more panes of glass surrounded by a rectangular wooden frame made of a top member, a bottom member and two side members permanently secured together. According to the present invention one or both of the side members are divided into two parts having the same vertical height, one part being permanently secured to the top and bottom membersof the frame, the other part being detachable. The sash as a whole thus consists of two or three principal parts which are detachable from one another, these parts being a central glazed part 20 and one or two side parts or carriers 22, 24 which are nor-' mally secured to the side edges of the central part so that all the parts move together as a unit with contour dimensions identical with those of a standard window sash. The improved sash can thus be installed in a standard pre-existing window frame 26, the side margin of the sashvsliding up and down in the customary vertical channels 28 in the frame. A three-part sash is illustrated in FIGURES l-7 of the drawings. The three parts 20,- 22, 24 are ordinarily fastened together to move up and 7 down as a unit. When it is desired to remove the central part 20; the side parts 22, 24 are fastened to the frame 26and are detached from the central sash part 20,-

whereupon the latter can be lifted clear and taken out bodily, leaving the side parts 22, 24 fastened to the frame. When the central part is ready to be replaced, it is moved down between the side parts until the three parts are in their normal relative positions, whereupon the side parts i are fastened to the central part and released from the frame 26. To facilitate the removal and replacement of the central part 20 it is made Wider at the top than it is at the bottom and is preferably but not necessarily made to taper downward, one or both side edges being slightly inclinedfrom the vertical. Detachable side'parts which adjoin inclined edges of the central part are wider at the bottom than at the top and are shaped to complement the central part so that the parts of a sash togetherform a rectangle. This description applies to either the lower sash or the upper sash of a two-sash window.

Various means can be employed to secure the side parts alternatively to the central part 20 of the sash or to the adjacent portions of the frame 26. To hold the side parts against the side edges of the central part, simple hook members 29 maybe mounted on the top edge of the central part to catch in slots in the tops of the side parts as best shown in FIGURE 7. In like manner, bottom hooks 36 may be mounted on the bottoms of the side'parts to catch in suitable notches in the bottom of the central member (FIGURES 4 and 7).

Counter-balancing means, hereinafter. described, are attached to the detachable part or parts such as the side parts 22, 24 so that the side parts are carriers of thecentral part 20 and will go up with it when the central part is manually raised. However, to avoid trouble in case one of" the side parts should stick, it is better to provide fasten-' ing means to prevent relative vertical movements of the parts of the sash. For this purpose, latches 32 may be mounted on the carriers 22,24 these latches being pivoted so that they can project either into notches 34 in the central part 20 to prevent relative vertical motion'between the carriers and the central part or into notches in the frame 26 to hold the carriers fast when the central part is lifted clear for removal from the frame, as in balance consists of a block-and-tackle rig 34 enclosed in a metal box or trough 36 attachedto and made a part of each of the carriers (FIGURE 3). 7

Instead of being partly of wood and partly of metal, the carriers may consist of elongated metal boxes 22",

24" within which are housed the counterbalancing mechaoted at 42 so as to project into a recess 44 in the window frame to anchor the carrier to the frame and to tom of the recess 44 whenthe sash is moved down from.

the position shown in FIGURE 5, so that when the central part 30 is replaced after having been removed, the latch moves automatically to lock the carriers to the central part.

A simple form of latch is shown in FIGURES 9 and 10. It consists of a short rod or bolt 46 with an end portion bent outward to serve as a grip 48. The rod extends horizontally through the carrier 24' and can be moved longitudinally so that one end portion engages a recess 50 in the frame 26 or the other end'portion engages in a recess 52 in the central part 20 of the sash. Before the latch can be shifted to engage in either recess the carrier must be at the proper height to line up the rod with such recess.

The counterbalancing mechanism shown in FIGURES 4 and 6 comprises an upper set of sheaves 54 mounted on a bracket 56 which is secured near the upper end of the metal box which constitutes the carrier 24", and a lower set of sheaves 58 mounted on a free frame 60 which is attached at its lower end to a spring or springs 62 the other ends of which are secured to the carrier near its lower end. A flexible strand 64 such as a cord or wire is secured at one end to the bracket 56 or to the frame 60 and is rove around the sheaves of the two sets 54 and '58 in alternation, the free end of the strand being carried up through the upper end of the carrier 24" and secured to the top member of the frame 26 as at 66. In the counterbalancing mechanism illustrated on the drawings, there are two sheaves in the upper set 56 and three in the lower set 60, but more or less sheaves can be used as found desirable. The springs 62. tend to pull the lower set of sheaves away from the upper set and thereby to draw more of the strand 64 into the carrier 24", thus aiding in the raising of the sash. T o conserve space so that the carrier containing the counterbalancing device can be made a part of a sash of standard overall dimensions, all the sheaves are arranged so that their axes are in a plane parallel to that of the sash itself. The sheaves are thus edgewise to the observer, as shown in FIGURE 4.

To avoid looseness between the parts of a sash, carriers 22", 24" may be made of two metal channels 70, 72 (FIGURE 8) the sides of which telescope to form the housing and are secured to each other by any suitable means. The side walls of the channel 70 may be made to extend beyond the channel 72 and to bear frictionally on the front and rear faces of the central part 20 of the sash. A spring flap 74 is on the bottom or outer face of the channel 78 to, press resiliently against the adjacent member of the Window frame 26 so that the carriers are pressed toward the central part 28 when the sash is in its usual assembled condition.

Another modified form of carrier is shown in FIG- URES 11 to 14, the latching device in this form being adapted to engage the window frame frictionally at any level in such a way as to resist upward movement of the carriers when the latches are in engagement with the frame, but to permit downward movement of the carriers. =As hereinafter described, a feeler is provided in each carrier to extend down from the bottom thereof, the relation of thev feeler to the latch being such that upward movement of the feeler from its projected position relative to its carrier results in retraction of the latch from contact with the window frame. Thus if the central part of the sash has been removed and then replaced between the carriers, the whole sash may then be pushed down as a unit until the projected feelers engage the bottom member of the window frame and are pushed upward, relatively to the sash, thereby retracting the latches from contact with the window frame.

The carrier illustrated in FIGURES 11 to 14 comprises an elongated housing composed of two channels 80, 82 the side walls of which overlap and are secured to each other by any suitable means. Mounted within this housing is a counterbalancing mechanism as hereinbefore described. In the lower portion of the housing is a latch 84 which is pivoted at one end, as at 86, and extends across the interior of the housing to project through an aperture 88 in the housing wall so as'to bear against a side of the window frame channel 28. The latch 84 is rockable about its pivot from an idle position (shown in FIGURE 12) in which it is entirely within the housing and slopes upward from the pivot, to its active position in which it projects through the aperture 88 for a binding engagement with a side of the window frame channel 28. FIG URE 11 shows the limiting horizontal position permitted by the aperture 88. Ordinarily the downward rocking movement of the latch from its idle position will be stopped by contact with the window frame channel wall:

before the latch reaches the limiting position shown. It is evident that when the latch is projecting from the housing and is in contact with the window frame channel wall, any effort to move the housing upward will. cause the latch to jam more tightly against the wall. Downward movement of the housing, however, is permitted, the latch being constructed to act as a one-way clutch. The arrangement of the latch is such that it tends to fall by gravity from its idle position, but a spring 90 is preferably employed to make such movements more positive.

To rock the latch upward to its idle position and hold it there, a pusher 92 is slidably located within the housing.

This pusher is conveniently in the form of a channel mem-' her with side walls 94 fitted within the housing. The upper portion of the pusher is cut away as indicated in FIGURES 11 and 12 so as not to interfere with the op eration of the spring 90. One of the side walls Q4 of the pusher is adapted to move upward from a position (FIG- URE 11) in which its upper end is just clear of the aperture 88 to a raised position (FIGURE 12) in which it closes the aperture and holds the latch 84 in its idle position. When the pusher is moved upward, it rocks the I latch from its active projecting position to its idle position.

For manual actuation of the pusher, it is provided with a finger-piece 96 which projects out through'a slot 98 in the housing wall. A downward push on the fingerpieces 96 of the two carriers locks the carriers against upward movement so that the central part 20 of the sash can be lifted out. When the central part 20 is restored to its position between the carriers, the finger-pieces 96 may be moved upward to release the carriers and permit the sash to be raised and lowered as a unit.

An alternative releasing means may be provided in the form of feelers 100 which are attached to or integral with the pushers 92 and project downward below the low end'of the carrier, housings when the pushers are in their lowered position. When it is desired to remove the central part 20 of the sash, the sash must first be raised sufficiently to provide clearance below the carriers for the projection of the feelers 100 as shown in FIGURE 11. Since the engagement of the latches 84 with the window frame is a frictionally binding one which does not require the entry of the latches into any recesses, the sash need not be raised to any particular height, provided that there is clearance below the feelers 100.

When the central part 20has been restored to its place after removal, the reassembled sash can be moved down to its closed position- The engagement of the feelers 100 with the lower member of the window frame. will force the pushers 92 upwardwith respect to the carriers to swing the latches 84 to their idle position.

Another modified form of the invention is shown in FIGURES 15 to 18. The lower sash illustrated in FIG- URE 15 has two parts. The glazed part is the main part, the other being a carrier 112. The main part 110 is wider at the top than at the bottom, and the carrier r 112 is wider at the bottom than at the top, but the parts are not tapered. Instead, the lower half 114 of the side edge of the main part 110 is offset inward from the upper half 116, forming a step or shoulder 118. The abutting side edge of the carrier 112 fits against the side edge of the main part and thus has an upper portion 120 offset from the lower portion 122, forming a step or shoulder 124 which engages the shoulder 118 when the sash parts are assembled. To make a more stable joint, the carrier 112 has a tongue 126 along its edge which fits in a corresponding groove 128 in the abutting edge of the main part 110. The trim 130 of the Window frame preferably overlaps and conceals the joint line of carrier and main part of the sash. The other side margin of the sash (not shown) is conventional and runs in the usual groove in the window frame.

To hold the parts of the sash together when assembled, a bottom hook 132 is mounted in the lower end of the carrier 112 to engage in the lower corner of the main part of the sash as indicated in FIGURE 15. The upper end of the carrier 112 is held to the sash part 110 by a pivoted latch 134 having an end tab 136 normally bearing on the top of the sash part 110. The latch is in the form of a bell-crank with the tab 136 at the end of one arm thereof, anotch 137 in this arm hooking on a pin 138 in the sash part 110. The latch 134 has a short arm 139 which is normally housed in the carrier 112.

To take out the sash part 110, the sash is raised until the arm 139 is opposite a recess 140 in the window frame which permits the latch 134 to be rocked clear of the main part 110. The arm then engages in the recess and prevents further upward movement of the carrier 112. The main part 110 of the sash is then raised further until the shoulder 118 is higher than the upper end of carrier and the lower end of the main part 110 is higher than the shoulder 124. The main part 110 can then be shifted to the left sufficiently for its right hand margin (not shown) to clear the groove in the window frame in which it travels. The right hand side of the main part 110 can then be swung forward and the main part moved toward the right to bring the left-hand margin away from the carrier. The main part is then free and can be replaced by making the same movements in reverse. In restoring the main part 110 to its normal position, it is moved downward until the shoulder 118 engages the shoulder 124 on the carrier 112. Further downward movement includes the carrier itself which causes the latch arm 139 to ride out of the recess and to rock the latch into the position shown in FIGURE 15. The carrier is thus locked to the main part 110 by the engage.- ment of the notched latch on the pin 138.

A suitable counterbalance for the sash is preferably provided. This may consist of a conventional weight (not shown) connected to a sash cord 142 which is attached to the carrier \112. i

I claim:

l. A rectangular window sash adapted to fit slidably in a standard window frame, said sash consisting of a glazed part and a detachable side part having the same vertical dimension as the glazed part and abutting a side edge of said glazed part, said side edge of the glazed part having halves perpendicular to the top and bottom edges of the sash and laterally otfset from each other, the abutting edge of said side part having correspondingly olfset halves whereby vertical movement of the glazed part relativeto said side part a distance half the height of said side part clears the glazed part for horizontal edgewise movement toward said side part for removal of said glazed part bodily from the frame, and means releasably locking said parts of the sash together in their normal relative position. 4

2. A window sash as described in claim 1, each said half of the side edge of the glazed part and the abutting half of the edge of said side part having a tongue-andgroove joint.

3. A window sash as described in claim 1, in combination with a window frame having a member normally overlapping the inner face of said sash and concealing the line on said inner face at which said parts of the sash abut each other.

References Cited in the file of this patent UNITED STATES PATENTS 2,774,119 Osten Dec. 18, 

